Noun1. an agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States (synonym) INS (hypernym) agency, federal agency, government agency, bureau, office, authority (part-holonym) Department of Justice, Justice Department, Justice, DoJ (part-meronym) United States Border Patrol, US Border Patrol

The agency having jurisdiction, supervision and control over the entry of aliens into the United States, and officers of that agency have the right to administer oaths, and to take and consider evidence, concerning the right or privilege of any alien to enter, re-enter, pass through or remain in the United States.